package Demo2;

public class KeyBoard implements USB {
    @Override
    public void openDevice() {
        System.out.println("插上键盘");
    }
    public void input() {
        System.out.println("键盘开始输入。。。。。");
    }
    @Override
    public void closeDevice() {
        System.out.println("关掉键盘");
    }
}
